Can't say I've done this one yet. Sure would like to meet/hear from someone who has. I know the guys are working in real shallow water (20 feet or so) up out of Nome, AK. But our shelf off the coast of oregon drops off pretty fast. Being a mile out of Nome, AK and only being in 20 feet of water is pretty impressive. Look at any Nautical maps off oregon, you go a mile out and you are in 100+ feet of water pretty quick. That makes for one damn expensive, damn heavy dredge hose... even if you had a car engine to pump the material that far upto the surface! Ocean Dredging presents some serious logistical challenges. I'm open to any ideas.